[Debian-eeepc-devel] saving battery

[Daniel Dalton]

Hi,

Yes, they do turning off logging is probably a good one. 

Thanks,
Dan

On Sat, Feb 13, 2010 at 01:59:50PM +0100, Hans-J. Ullrich wrote:
> Am Samstag, 13. Februar 2010 schrieb Daniel Dalton:
> > Hi,
> Hi Daniel,
> 
> > 
> > I'm trying to get as much battery life out of my eeepc as possible. It's
> > really good, I can currently get about 5 hours or just over on my
> > 1008ha. I've turned off bluetooth, wireless and the screen as I'm
> > blind.
> > I have also enabled laptop-mode from the debian package
> > laptop-mode-tools.
> > 
> > What else can I do to save battery? I read somewhere I can throttle down
> > the cpu speed when necessary? Or is this a dangerous procedure? Also is
> > it possible to turn off power to the ethernet port as I rarely use
> > this...
> > 
> If speed is not so important for you (and I suppose, you need no X), it might 
> be possible, to throttle your cpu down to 800Hz. When you work in console, the 
> clock frequency of your cpu will not be such important to the speed. 
> 
> How this is done, I cannot tell. As I am using X, my first choice is 
> powerdevil, which is X related. Maybe someone else can tell, how hold cpu 
> clock down in console. I think, it might be a command to the /proc interface.
> 
> This will save some extra power. In BIOS all not necessary interfaces can be 
> switched off (also the gprs interface, which might save extra power, too)
> 
> Another thing is, to deinstall all not needed services. Some services, like 
> snort or virus scan, do need some cpu power. Yes, and java might increasing 
> cpu power was well. 
> 
> I suggest furthermore, to deinstall all packages, you do not need. Remember, 
> every service or process, you are running, might need extra power.
> 
> Ah, yes, one thing may also save power: You can switch off all logging, or do 
> all lojgging to an SD-card , RAM-drive or USB-stick. Doing so, you can inhibit 
> permanently writing to the harddrive, justonly when you need it. If you do not 
> need logging at all, just switch it off.
> 
> If you do so, you can switch off the harddrive, which saves power, too. When 
> you want to write to the harddrive, there is a short delay, but this will not 
> bother, I think.
> 
> 
> > Or is what I'm doing now about the best you can do? I'm very happy with
> > it, but of course if I can increase it by half an hour or so I
> > definitely will. Mainly I'm just using it for taking down notes, and
> > every now and then connect to the wifi...
> > 
> > Thanks for any suggestions
> > Dan
> 
> 
> I hope these little tipps might help.
> 
> Good luck!
> 
> Hans
> 
> > 
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> > 
> 
> 
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